The Japanese 7 spice is often used as a finishing spice or table spice, in other words used after the cooking is complete. Here I use it both for flavor in the cooking and afterwards to finish the eggplant.
Serves 4
1 Tablespoon Dried tangerine peel, minced
 2 Teaspoons  White sesame seeds
 1  Teaspoon Black sesame seeds
 2 Teaspoons  Hot chili flakes
 2 Teaspoons Nori flakes
 1 Teaspoon Sansho
 1 Teaspoon Poppy seeds
 4 Medium Japanese Eggplants
 2 Tablespoons Sesame oil
 2 Tablespoons Mirin
 2 Tablespoons Thick soy sauce
To prepare the spice mixture:  
In a clean mortar and pestle combine the tangerine, sesame seeds, chili flakes, nori, sansho and poppy seeds. 
To prepare the eggplant: 
Cut the eggplants on a bias about 1 inch thick. Season the slices with the 7 spices. In a heavy bottom pan warm the sesame oil until just before smoking point. Add the seasoned eggplants, cooking until both sides are well browned for about 3-4 minutes. Add in the mirin and the soy. Turn and baste the eggplant, cooking for another minute. Spoon the eggplant into a colorful bowl and sprinkle with a little 7 spices.